฿26,150 Cheap Flights from Boston (BOS) to Sydney (SYD)

View ฿26,150 flight on Sun, 13 Sept 2026Opens in a new window

Popular airlines from Logan International Airport (BOS) to Sydney Airport (SYD)

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Cheap Flights from Boston (BOS) to Sydney (SYD)

Prices were available within the past 7 days and start at ฿26,150 for one-way flights and ฿46,675 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Etihad Airways
Thu, 27 Aug - Mon, 7 Sept
BOS
Boston
SYD
Sydney
฿46,675 Return, found 6 days ago
฿46,675
Return
found 6 days ago
Select Etihad Airways flight, departing Thu, 27 Aug from Boston to Sydney, returning Mon, 7 Sept, priced at ฿46,675 found 6 days ago
United
Thu, 27 Aug - Mon, 7 Sept
BOS
Boston
SYD
Sydney
฿47,115 Return, found 6 days ago
฿47,115
Return
found 6 days ago
Select United flight, departing Thu, 27 Aug from Boston to Sydney, returning Mon, 7 Sept, priced at ฿47,115 found 6 days ago
Delta
Thu, 27 Aug - Mon, 7 Sept
BOS
Boston
SYD
Sydney
฿47,125 Return, found 6 days ago
฿47,125
Return
found 6 days ago
Select Delta flight, departing Thu, 27 Aug from Boston to Sydney, returning Mon, 7 Sept, priced at ฿47,125 found 6 days ago
Qantas Airways
Thu, 27 Aug - Mon, 7 Sept
BOS
Boston
SYD
Sydney
฿48,600 Return, found 6 days ago
฿48,600
Return
found 6 days ago
Select Qantas Airways flight, departing Thu, 27 Aug from Boston to Sydney, returning Mon, 7 Sept, priced at ฿48,600 found 6 days ago
Qantas Airways
Thu, 27 Aug - Mon, 7 Sept
BOS
Boston
SYD
Sydney
฿48,620 Return, found 6 days ago
฿48,620
Return
found 6 days ago
Select Qantas Airways flight, departing Thu, 27 Aug from Boston to Sydney, returning Mon, 7 Sept, priced at ฿48,620 found 6 days ago
Qantas Airways
Thu, 27 Aug - Mon, 7 Sept
BOS
Boston
SYD
Sydney
฿48,675 Return, found 6 days ago
฿48,675
Return
found 6 days ago
Select Qantas Airways flight, departing Thu, 27 Aug from Boston to Sydney, returning Mon, 7 Sept, priced at ฿48,675 found 6 days ago
Delta
Thu, 27 Aug - Mon, 7 Sept
BOS
Boston
SYD
Sydney
฿50,220 Return, found 6 days ago
฿50,220
Return
found 6 days ago
Select Delta flight, departing Thu, 27 Aug from Boston to Sydney, returning Mon, 7 Sept, priced at ฿50,220 found 6 days ago
Air Canada
Thu, 27 Aug - Mon, 7 Sept
BOS
Boston
SYD
Sydney
฿52,515 Return, found 6 days ago
฿52,515
Return
found 6 days ago
Select Air Canada flight, departing Thu, 27 Aug from Boston to Sydney, returning Mon, 7 Sept, priced at ฿52,515 found 6 days ago
American Airlines
Thu, 27 Aug - Mon, 7 Sept
BOS
Boston
SYD
Sydney
฿55,375 Return, found 6 days ago
฿55,375
Return
found 6 days ago
Select American Airlines flight, departing Thu, 27 Aug from Boston to Sydney, returning Mon, 7 Sept, priced at ฿55,375 found 6 days ago
Air Canada
Thu, 27 Aug - Mon, 31 Aug
BOS
Boston
SYD
Sydney
฿56,580 Return, found 6 days ago
฿56,580
Return
found 6 days ago
Select Air Canada flight, departing Thu, 27 Aug from Boston to Sydney, returning Mon, 31 Aug, priced at ฿56,580 found 6 days ago

Find the cheapest month to fly from Boston (BOS) to Sydney (SYD)

May is typically the cheapest month to fly

From ฿31,206 - ฿50,069 per traveller.

Frequently asked questions

How much is a flight from Logan Intl. Airport to Sydney Airport?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price available for a round-trip flight from Logan Intl. Airport (BOS) to SYD was ฿46,675. Cheap fares don't hang around forever, so book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from BOS to Sydney Airport?
This differs between air carriers, as each has its own terms and conditions. Visit the Customer Service Portal, where there are simple instructions on how to cancel your flight online.
How do I find cheap flights from BOS to Sydney Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Logan Intl. Airport (BOS) to Mascot Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Logan Intl. Airport (BOS) to Kingsford Smith Intl. Airport (SYD)?
You'll have 16,300 kilometres to cover on the long-haul Boston to Sydney route. Wear layers of comfortable clothes and consider taking a sleep mask and earplugs.
Which airlines fly direct from BOS to Mascot Airport?
If you want to travel straight from Logan Intl. Airport to SYD, you'll need to book a flight with at least one stop. Unfortunately, there aren't any airlines that fly directly between these airports.
Are BOS to Sydney Airport flight tickets cheaper when they're purchased at the last minute?
Fares from Logan Intl. Airport to Sydney Airport are available up to 12 months before departure on Expedia. And although you may score great last-minute deal, it's never something you can count on. Also, booking your flights ahead of time means you'll have more choices — and you can avoid landing the dreaded middle seat! We frequently update our fares to bring you the biggest bargains, so keep checking in for all the latest specials.

Travel information

Origin airport
Logan Intl.
Destination airport
Kingsford Smith Intl.
Return price
฿46,675
Distance
16155 km
*Available to Expedia members.